BTM44x

Datasheet

Embedded Wireless Solutions Support Center:

http://ews-support.lairdtech.com

www.lairdtech.com/wireless

7

© Copyright 2015 Laird. All Rights Reserved

Americas: +1-800-492-2320

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

Signal

Description

Voltage Specification

35

Unused

See note 3

36

Unused

See note 3

37

Unused

See note 3

38

Unused

39

Unused

40

Unused

41

GND

42

GPIO1 / UART_RI

I/O for host

VIO

43

GPIO7 / UART_DTR

I/O for host

VIO

44

GPIO8 / UART_DSR

I/O for host

VIO

45

GND

46

D-

Not used for AT module variants

VUSB

47

D+

Not used for AT module variants

VUSB

48

GPIO6

I/O for host- RF_Active

VIO

49

GPIO5

I/O for host – WLAN_Active

VIO

50

GPIO3

I/O for host – BT_Priority

VIO

Notes:

Unused pins may have internal connections and must not be connected.

Reset input is active low. Input is pulled up to VDD_IN via 22k. Minimum reset pulse width is 5ms.

Pins 25-37 should be left not connected on modules with integrated antenna (BTM441/3)

Pins 8 – 11 (SPI related) are only for Laird internal production purposes.